At once ambitious and complex, the Who’s Tommy stands as a shining moment in their vast career. Their sweeping work redefined the “concept album” and set the standard for rock operas such as Green Day’s American Idiot.

Even as the Who announced the final dates of their sold-out Quadrophenia and More tour across the UK, Pete Townshend can’t help but marvel that they’re still together at all. And not just because they’ve lost two members.